Gryphus_1

Hi guys, I´m searching this part "Size3.Size2.Tank". On KerbalX I can find it and its telling me that this is a part from a mod "squadexpansion". But this mod dont appear anywhere and I cant remember that i have installed this mod. I had installed many mods, so i cant tell anymore but i thought i build a fully stock craft without modparts. Please help me finding this part, i cant load my craft anymore. Thank you for your help.